Pen



FIG. 1 is a side, top, perspective view of a pen showing our new design;

FIG. 2 is a left side view thereof, the right side view being a mirror image of the left side view;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a front view thereof;

FIG. 6 is a rear view thereof;

FIG. 7 is a side, top perspective view of the pen shown without the cap for convenience;

FIG. 8 is a front view thereof;

FIG. 9 is a rear view thereof;

FIG. 10 is a perspective view of the cap shown without the pen for convenience; and,

FIG. 11 is a rear view thereof.

The broken lines showing the clip in FIGS. 1-3, 5 and 6; part of the pen in FIGS. 7 and 8;3 and the inside of the cap and the clip in FIGS. 10 and 11 are included for the purpose of showing portions that form no part of the claimed design. 

CLAIM The ornamental design for pen, as shown and described. 